Electricity Basics Quiz

A current of 5.0 amperes is passing through a piece of wire. Determine how long it takes for 30 coulombs of charge to pass through this wire.

• 2 seconds

• 6 seconds

• 10 seconds

• 15 seconds

4.0 x 10^18 electrons pass through a wire every 2.0 seconds. What is the charge on this number of electrons in coulombs?

• 0.64 C

• 6.4 C

• 64 C

• 640 C

Determine the rate of current flow through the wire when 4.0 x 10^18 electrons pass through it every 2.0 seconds.

• 0.32 A

• 3.2 A

• 32 A

• 320 A

A spark generates a current of 4.2 milliamps and lasts for 2.0 milliseconds. Determine the total amount of charge that is transferred in this spark.

• 8.4 x 10^-3 C

• 8.4 x 10^-6 C

• 8.4 x 10^-9 C

• 8.4 x 10^-12 C

How many electrons were transferred in the spark that generates a current of 4.2 milliamps and lasts for 2.0 milliseconds?

• 5.25 x 10^13 e

• 5.25 x 10^16 e

• 5.25 x 10^19 e

• 5.25 x 10^22 e

Which 20 coulombs of charge pass a given point in a conductor every 4.0 seconds, the current through this point is

• 80 A

• 20 A

• 16 A

• 5.0 A

The current passing through a light bulb is 4.0 amperes. How many coulombs of charge pass through the light bulb in one minute?

• 120 C

• 40.0 C

• 240 C

• 480 C

An ampere can be defined as one

• coulomb per second

• joule per coulomb

• newton per coulomb

• ohm per volt

How many electrons will accumulate on a television screen in 5.0 seconds if the current supplied to the screen is 5.0 x 10^-3 ampere?

• 3.1 x 10^24

• 6.3 x 10^18

• 1.6 x 10^15

• 1.0 x 10^5

The current in a wire is 4.0 amperes. The time required for (2.5 x 10^19) electrons to pass a certain point in the wire is

• 1. 1.0 s

• 2. 0.25 s

• 3. 0.50 s

• 4. 4.0 s